The Fredösphere

It turns out Thomas Edison found a way to travel through the ether, resulting in space travel during the Victorian era.  I did not know that.  Space 1889 tells the story in the form of an audio drama, reviewed here.  This sentence does not sum up the generally positive review, but it caught my attention:

In hard sf terms, this is several mathematical symbols short of the full equation.

The reviewer calls it Gaslight SF, but I don't think that works as a general descriptor of the genre.  This is not retro-futurism; I suppose you could argue it is its opposite.  Thus, I propose we dub it futro-retroism. 

I can think of other examples of the genre (Sky Captain and the World of Tomorrow; The Wild, Wild West) -- can you?  In my opinion, anachronisms and contrafactuals introduced to the past via time machines (e.g., The Guns of the South) belong in yet another category.